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Draw labelled graphs to show how electri...

Draw labelled graphs to show how electrical resistance varies with temperature for :
(i) a metallic wire.
(ii) a piece of carbon

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To solve the question of how electrical resistance varies with temperature for a metallic wire and a piece of carbon, we will draw two labeled graphs and explain the characteristics of each. ### Step-by-Step Solution: #### (i) Graph for a Metallic Wire: 1. **Understanding Resistance in Metals**: - The resistance of metallic wires increases with an increase in temperature. This is due to increased vibrations of the metal atoms, which impedes the flow of electrons. ...
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